BoilerFaultCodes 98 High
Boiler Fault Code 98
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 98 appears across 1 boiler brand and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's computer has encountered too many internal processing errors and has safely locked itself to prevent further instability. (As reported on Alpha Intec2 25 28XE)
Pick your boiler brand for the 98 fix
Source
Information for the 98 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026